Sharp LC-13SH1U, Service Manual

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WF8
WF9
PIN 11 OF
CN103A
PIN 9 OF
CN103A
PIN 7 OF
CN103A
WF7
WF6
PIN 5 OF
CN103A
WF5
PIN 3 OF
CN103A
WF4
PIN 1 OF
CN103A
Main CBA Bottom View
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
NOTE :
The voltage for parts in hot circuit is measured
using hot GND as a common terminal.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.
ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE
MÊME TYPE DE 4A, 125V.
4A/125V
8-22
BL0170F01011-1
CAUTION !
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F601) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
8-21
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
MAIN CBA
Ref No. Position Ref No. Position
IC11 B-2 Q505 E-1
IC502 C-2 Q507 C-2
IC503 B-2 Q508 C-2
IC504 C-2 Q509 C-3
IC505 C-2 Q511 C-4
IC506 C-3 Q512 C-2
IC601 D-1 Q513 C-2
IC603 C-2 Q514 C-3
IC604 C-3 Q515 C-3
IC781 A-4 Q516 C-3
IC801 A-1 Q517 D-3
IC851 B-3 Q601 D-1
IC852 A-3 Q603 C-1
Q633 E-1
Q31 B-3 Q701 B-4
Q401 D-4 Q702 A-4
Q403 D-4 Q703 B-4
Q404 D-5 Q704 A-4
Q405 D-5 Q705 A-4
Q406 E-5 Q706 A-4
Q407 E-5 Q707 B-4
Q408 D-5 Q708 B-4
Q409 E-4 Q709 A-2
Q410 E-5 Q802 B-1
Q411 D-4 Q803 A-1
Q412 E-5
Q415 E-3 CN101A C-4
Q416 D-3 CN102A C-4
Q419 E-5 CN103A B-4
Q420 D-5 CN104 D-5
Q421 D-5 CN401 E-5
Q422 E-4 CN402 E-4
Q423 E-4 CN403 E-3
Q424 E-4 CN404 E-2
Q425 E-4 CN801 A-1
Q426 D-4 CN802 E-1
Q427 D-3
Q428 D-4 VR601 D-4
Q501 D-3
Q502 C-4 TP300 A-5
Q503 C-3 TP401 D-3
Q504 C-3
ICS
TRANSISTORS
CONNECTORS
TRANSISTORS
TEST POINTS
VARIABLE RESISTOR